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            <h2 class="title" style="clear: both"><a id="OrchIblock"></a>Instrument and Opcode Block Statements</h2>
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      <p>
    An instrument block is comprised of <span class="emphasis"><em>ordinary statements</em></span> that set values, control the logical flow, or invoke the various signal processing subroutines that lead to audio output. Statements that define an instrument block are:
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    An instrument block looks like this:
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    <span class="oblock">instr</span> 1   <span class="comment">;A simple sine wave oscillator</span>
aout  <span class="opc">oscils</span>  10000, 440, 0
out   <span class="opc">aout</span>
    <span class="oblock">endin</span></pre>
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    Statements that define a user defined opcode (UDO) block are
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    See the <a class="link" href="OrchUDO.html" title="User Defined Opcodes (UDO)"><em class="citetitle">UDO</em></a> section for more information.
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